Lo que aprendimos

const deleteIcon = () => {
    const i = document.createElement("i");
    i.classList.add("fas", "fa-trash-alt", "trashIcon", "icon");
    i.addEventListener("click", deleteTask);
    return i;
  };

  const deleteTask = (event) => {
    const parent = event.target.parentElement;
    console.log(parent);
    parent.remove();
  };

  export default deleteIcon;
  
  
  const checkComplete = () => {
    const i = document.createElement('i');
    i.classList.add('far', 'fa-check-square', 'icon');
    i.addEventListener('click', completeTask);
    return i;
  };

  // Immediately invoked function expression IIFE
  const completeTask = (event) => {
    const element = event.target;
    element.classList.toggle('fas');
    element.classList.toggle('completeIcon');
    element.classList.toggle('far');
  };

  export default checkComplete;